const createError = require('http-errors');
const express = require('express');
const cookieParser = require('cookie-parser');
const logger = require('morgan');

const webAdminRoutor = require('./routes/webadmin');
const webRouter = require('./routes/web');
const adminRouter = require('./routes/admin');

const app = express();

//静态文件
app.use("/Image",express.static(__dirname+"/Image"))//静态图片
app.use("/uploads",express.static(__dirname+"/uploads"))//上传图片
// 自定义跨域中间件
var allowCors = function(req, res, next) {
  res.header('Access-Control-Allow-Origin', req.headers.origin);
  res.header('Access-Control-Allow-Methods', 'GET,PUT,POST,DELETE,OPTIONS');
  res.header('Access-Control-Allow-Headers', 'Content-Type,Content-Length,Authorization,Origin,Accept,X-Requested-With');
  res.header('Access-Control-Allow-Credentials','true');
  if(req.method=="OPTIONS") res.sendStatus(200);/*让options请求快速返回*/
  else  next();
};
app.use(allowCors);//使用跨域中间件

app.use(logger('dev'));
app.use(express.json());
app.use(express.urlencoded({ extended: false }));
app.use(cookieParser());

app.use(webAdminRoutor);
app.use(webRouter);
app.use(adminRouter);

// catch 404 and forward to error handler
app.use(function(req, res, next) {
  next(createError(404));
});

// error handler
app.use(function(err, req, res, next) {
  // set locals, only providing error in development
  res.locals.message = err.message;
  res.locals.error = req.app.get('env') === 'development' ? err : {};

  // render the error page
  res.status(err.status || 500);
  res.render('error');
});

module.exports = app;
